FeaturesHigh Volume Mechanical Fuel Pump Replaces Chevy Big Block V8 Engine 396-454, 80 GPH (Free Flow) is double the flow of the stock pump.TPS Mechanical Fuel Pump can upgrade your car's fuel pump without losing its classic look. The pumps feature an adjustable rotating plate that can be mounted according to the engine compartment and use durable rubber seals to provide the best protection against leaks.The mechanical fuel pump is cast from lightweight aluminum with a beautiful, high-quality chrome finish.They were designed to flow faster than stock, professional manufacturing, high precision. SpecificationItem Type: Mechanical Fuel PumpBody Material: AluminumFreeFlow: 80 GphPressure: 6 PSIInlet Fitting: FemaleInlet Size: 1/4 inch NptOutlet Fitting: FemaleOutlet Size: 1/4 inch NptGasket: Included. Fitment: Chevy Big Block V8 Engine Replacement 396-454396 cu. in. (6.5 L) 402 cu. in. (6.6 L) 409 cu. in. (6.7 L) 427 cu. in. (7.0 L) 454 (7.4 L)How to use Package List1 x Mechanical Fuel Pump1 x Gasket